6394842719 has 8 divisors (see below), whose sum is σ = 6779538048. Its totient is φ = 6021298080.

The previous prime is 6394842703. The next prime is 6394842721. The reversal of 6394842719 is 9172484936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6394842719 - 2⁴ = 6394842703 is a prime.

It is a super-2 number, since 2×6394842719² = 81788026801494625922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6391842719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786492 + ... + 2788785.

It is an arithmetic number, because the mean of its divisors is an integer number (847442256).

Almost surely, 2^6394842719 is an apocalyptic number.

6394842719 is a deficient number, since it is larger than the sum of its proper divisors (384695329).

6394842719 is a wasteful number, since it uses less digits than its factorization.

6394842719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575345.

The product of its digits is 2612736, while the sum is 53.

The square root of 6394842719 is about 79967.7604975905. The cubic root of 6394842719 is about 1856.1366915550.

The spelling of 6394842719 in words is "six billion, three hundred ninety-four million, eight hundred forty-two thousand, seven hundred nineteen".